The Sydney Police have already launched an investigation into the passport issue of Gunaratnam who was deported to Australia from Colombo recently after being allegedly abducted.Gunaratnam and FSP member Dimuthu Attygalle were abducted on the 6th of April. Police said that Gunaratnam, who is an Australian national, had walked into the police anti-crime unit at Dematagoda on the 10th of April and was later deported to Australia. The Department of Immigration and Emigration has said that Gunarathnam will not be permitted to re-enter Sri Lanka even as a Sri Lankan citizen. Gunaratnam said that he was tortured by his captors immediately after he was kidnapped but later changed their tactics. The orders to blacklist Gunarathnam had been received from the Defence Ministry, sources at the Department of Immigration and Emigration told The Sunday Leader. Frontline Socialist Party (FSP) leader Premakumar Gunarathnam alias Kumar Mahathya has been blacklisted by the Sri Lankan government, reports said on Sunday.According to the Department of Immigration and Emigration, Gunarathnam is being blacklisted from entering the country on the basis that he came to Sri Lanka recently using an Australian passport with a different name.